1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1997 Doug Rabson 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/linker.h> 31 32 #include <err.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <sysexits.h> 36 #include <unistd.h> 37 38 static void 39 usage(void) 40 { 41 fprintf(stderr, "usage: kldunload [-fv] -i id ...\n"); 42 fprintf(stderr, " kldunload [-fv] [-n] name ...\n"); 43 exit(EX_USAGE); 44 } 45 46 #define OPT_NULL 0x00 47 #define OPT_ID 0x01 48 #define OPT_VERBOSE 0x02 49 #define OPT_FORCE 0x04 50 51 int 52 main(int argc, char** argv) 53 { 54 struct kld_file_stat stat; 55 int c, fileid, force, opt; 56 char *filename; 57 58 filename = NULL; 59 opt = OPT_NULL; 60 61 while ((c = getopt(argc, argv, "finv")) != -1) { 62 switch (c) { 63 case 'f': 64 opt |= OPT_FORCE; 65 break; 66 case 'i': 67 opt |= OPT_ID; 68 break; 69 case 'n': 70 /* 71 * XXX: For backward compatibility. Currently does 72 * nothing 73 */ 74 break; 75 case 'v': 76 opt |= OPT_VERBOSE; 77 break; 78 default: 79 usage(); 80 } 81 } 82 83 argc -= optind; 84 argv += optind; 85 86 if (argc == 0) 87 usage(); 88 89 while ((filename = *argv++) != NULL) { 90 if (opt & OPT_ID) { 91 fileid = atoi(filename); 92 if (fileid < 0) 93 errx(EXIT_FAILURE, "Invalid ID %s", optarg); 94 } else { 95 if ((fileid = kldfind(filename)) < 0) 96 errx(EXIT_FAILURE, "can't find file %s", 97 filename); 98 } 99 if (opt & OPT_VERBOSE) { 100 stat.version = sizeof(stat); 101 if (kldstat(fileid, &stat) < 0) 102 err(EXIT_FAILURE, "can't stat file"); 103 (void) printf("Unloading %s, id=%d\n", stat.name, 104 fileid); 105 } 106 if (opt & OPT_FORCE) 107 force = LINKER_UNLOAD_FORCE; 108 else 109 force = LINKER_UNLOAD_NORMAL; 110 111 if (kldunloadf(fileid, force) < 0) 112 err(EXIT_FAILURE, "can't unload file"); 113 } 114 115 return (EXIT_SUCCESS); 116 } 117